Because it would be unethical to purposely expose populations of humans to varying degrees of toxic air, much of this evidence relies on associations between air quality and human diseases
Samuel Pepys described the coronation of Charles II in great detail in his diary entries 22nd and 23rd April 1661 including the Kings entry into Westminster Hall And the King came in with his crown on, and his sceptre in his hand, under a canopy borne up by six silver staves, carried by Barons of the Cinque Ports, and little bells at every end
"We had a ball
Evaluation of cadmium, lead, nickel and zinc status in biological samples of smokers and nonsmokers hypertensive patients
27 1953) Crocidolite, we now know, is one of the most dangerous forms of asbestos to which a human can be exposed, in part because it is easy to inhale
Their shared relation to the necrosis of the pulmonary epithelia is therefore not surprising